Good tube for the money
The Sino, Shuguang 12AT7, & 12AX7s are pretty decent tubes for the money. The 12AT7 closest to the power tubes in any push pull Fender amp, is the hardest working tube in the amp. The phase inverter is always running, and splitting the signal to the output tubes. These make a decent phase inverter, or reverb driver.
Reviewed by: Seth Burgin from Arizona/Colorado.